公开(公告)号：US10340964B2

公开(公告)日：2019-07-02

申请号：US14823801

申请日：2015-08-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jung Hoon Suh ,  Jiayin Zhang ,  Osama Aboul-Magd

IPC: H04B1/12 ,  H04L27/26 ,  H04L5/00

Abstract: An OFDMA subframe carrying different data fields in different time segments may include a separate short training field (STF), and a separate set of long training fields (LTFs), for each of the data fields to accommodate time-reuse scheduling. Communicating a separate STF for each data field may allow receivers to re-adjust automatic gain control (AGC) when the data fields carry different numbers of space-time-streams. Likewise, communicating separate sets of LTFs for each data field may allow different beamforming parameters to be applied to different data fields.

公开(公告)号：US20190165978A1

公开(公告)日：2019-05-30

申请号：US16264926

申请日：2019-02-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jiayin Zhang ,  Jun Zhu ,  Yalin Liu ,  Yingpei Lin

IPC: H04L27/26 ,  H04L5/00 ,  H04L29/06

Abstract: A method includes generating a preamble for a protocol version of a wireless local area network, where the preamble includes a legacy signal (L-SIG) field and a high efficiency signal (HE-SIG) field that are arranged in order, the HE-SIG field includes a first orthogonal frequency division multiplexing OFDM symbol and a second OFDM symbol that are arranged in order, and an input information bit of the first OFDM symbol is the same as that of the second OFDM symbol, and sending the preamble to a receive end device, so that the receive end device restores the preamble, and when determining that input information bits obtained after restoring the first OFDM symbol and the second OFDM symbol are the same, determines that the preamble is the preamble of the protocol version.

公开(公告)号：US20190082466A1

公开(公告)日：2019-03-14

申请号：US16124876

申请日：2018-09-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yalin Liu ,  Jun Zhu ,  Jiayin Zhang ,  Tianyu Wu

IPC: H04W74/08 ,  H04W88/02 ,  H04W72/04 ,  H04W72/12

CPC classification number: H04W74/0816 ,  H04W72/0413 ,  H04W72/12 ,  H04W72/1263 ,  H04W88/02

Abstract: Embodiments provide a channel contention method and apparatus. The channel contention apparatus belongs to a basic service set (BSS). The BSS includes an access point (AP) and at least one first station (STA). Both the AP and the at least one first STA participate in channel contention. The apparatus is the AP or any first STA. The apparatus includes a sensing module configured to sense a channel. The apparatus also includes a contention module configured to contend for the channel. The AP centrally performs control and scheduling so that all of at least one network device in the BSS can transmit data using the channel.

公开(公告)号：US10178012B2

公开(公告)日：2019-01-08

申请号：US15068188

申请日：2016-03-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jung Hoon Suh ,  Osama Aboul-Magd ,  Jiayin Zhang

IPC: H04L12/26 ,  H04B7/06 ,  H04W24/06 ,  H04W84/12

Abstract: System and method embodiments for generating and transmitting a sounding frame in wireless network. In an embodiment, a method for uplink multi-user feedback polling in a wireless network includes generating, by an access point (AP) in the wireless network, a sounding frame including a physical layer (PHY) trigger and a list of stations (STAs) to provide feedback, the PHY trigger indicating that the STAs in the list of STAs are to perform channel estimation; transmitting, by the AP, the sounding frame to one or more STAs; and receiving, by the AP, one or more uplink multi-user feedback frames from the STAs.

公开(公告)号：US20180352577A1

公开(公告)日：2018-12-06

申请号：US15882439

申请日：2018-01-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jiayin Zhang ,  Lei Huang ,  Yingpei Lin ,  Yan Xin

IPC: H04W74/08 ,  H04W16/14 ,  H04B7/08

Abstract: A method and system for LBT or CCA threshold setting for directional reception and transmission are provided. In an embodiment, a method in a wireless device for determining if a channel is clear in an unlicensed band channel in a wireless network includes detecting, with the wireless device, an energy along a first beamforming direction. The method also includes determining, with the wireless device, an energy detection threshold. The method also includes determining, with the wireless device, whether the unlicensed band channel is clear in at least the first receiving direction according to the energy and the energy detection threshold.

公开(公告)号：US20180316467A1

公开(公告)日：2018-11-01

申请号：US16028884

申请日：2018-07-06

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Jun Zhu ,  Jiayin Zhang ,  Jiyong Pang ,  Le Liu

IPC: H04L5/00

CPC classification number: H04L5/0044 ,  H04L5/0048 ,  H04L5/0053 ,  H04L25/0204 ,  H04L27/2602 ,  H04W52/281 ,  H04W84/12

Abstract: Embodiments of the present invention provide an extended range SU mode PPDU transmission method and apparatus. The method comprises: generating an extended range SU mode PPDU, wherein a legacy preamble part in the extended range SU mode PPDU is transmitted by using a bandwidth of 20 MHz, a data part in the extended range SU mode PPDU is transmitted by using a narrowband, and a bandwidth in the narrowband transmission comprises at least one of the following parameters: a 26-tone RU, a 52-tone RU, a 106-tone RU, or a 242-tone RU; and sending the extended range SU mode PPDU. By applying the method and the apparatus in the embodiments of the present invention, transmission reliability of the data part is improved, performance of parts in the PPDU in an EXT SU mode is more balanced, and a coverage area of long-distance transmission is ensured.

公开(公告)号：US10104693B1

公开(公告)日：2018-10-16

申请号：US15610340

申请日：2017-05-31

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jiayin Zhang ,  Mohamed Adel Salem ,  Jun Zhu

IPC: H04B15/00 ,  H04W74/08 ,  H04W16/14 ,  H04W72/04 ,  H04B17/309 ,  H04W72/06

Abstract: A method for dynamically dividing or consolidating sub-bands in-between Clear Channel Assessment (CCA) status measurements upon detection of a CCA bandwidth adjustment condition is provided. The method includes determining at least a single CCA status for at least a single sub-band during a first period, and detecting a CCA bandwidth adjustment condition for dividing the single sub-band into two or more separate sub-bands, where a combination of the two or more separate sub-bands occupies the same frequency band as the single sub-band. The method also includes determining a separate CCA status for each of the two or more separate sub-bands during a second period. An apparatus for performing this method is also provided.

公开(公告)号：US09967009B2

公开(公告)日：2018-05-08

申请号：US14975555

申请日：2015-12-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yingpei Lin ,  Jiayin Zhang ,  Yi Luo

IPC: H04W4/00 ,  H04B7/0456 ,  H04W72/04 ,  H04W4/06

CPC classification number: H04B7/0456 ,  H04W4/06 ,  H04W72/0413 ,  H04W72/0453

Abstract: The present invention discloses a data transmission method and apparatus. A first access point determines a current working uplink receiving beam, and broadcasts an identifier of the current working uplink receiving beam of the first access point, so that when a first station associated with the first access point determines, according to the identifier of the current working uplink receiving beam of the first access point, that a first transmitting beam at which the first station is currently working is the current working uplink receiving beam of the first access point, the first station performs data transmission with the first access point by using the first transmitting beam. The current working uplink receiving beam of the first access point and a current working uplink receiving beam of a second access point do not overlap in space.

公开(公告)号：US20180063865A1

公开(公告)日：2018-03-01

申请号：US15640404

申请日：2017-06-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Toufiqul Islam ,  Peng Zhang ,  Jiayin Zhang

IPC: H04W72/14 ,  H04W72/04 ,  H04W76/04

CPC classification number: H04W72/14 ,  H04L5/0007 ,  H04L5/0044 ,  H04L5/0064 ,  H04L5/0087 ,  H04L5/0091 ,  H04W72/044 ,  H04W72/1242 ,  H04W72/1273 ,  H04W72/1289 ,  H04W76/27 ,  H04W88/02 ,  H04W88/08

Abstract: A system and method for multiplexing traffic. A wireless device such as a base station may schedule a first transmission of first data (e.g., latency tolerant data) to a first UE on first resources, and transmit second data (e.g., low latency data) to a second UE on a portion of the first resources. The base station may signal a first indicator e.g. via Radio Resource Control (RRC) signaling to the first UE indicating that the first UE is to monitor for a second indicator that itself indicates the presence of second data on the first resources. The base station may then signal a second indicator to the first UE to indicate the presence of the second data on the first resources. By using the first indicator to initiate the monitoring of the second indicator, the first UE can reduce the amount of monitoring it needs to perform if there is no second data traffic in a certain period of time or in a certain frequency band.

公开(公告)号：US20170223734A1

公开(公告)日：2017-08-03

申请号：US15492053

申请日：2017-04-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yingpei Lin ,  Jiayin Zhang ,  Jun Luo ,  Le Liu

IPC: H04W74/04 ,  H04W72/04 ,  H04L29/06

CPC classification number: H04W74/04 ,  H04L5/0053 ,  H04L5/0092 ,  H04L27/2601 ,  H04L29/06 ,  H04L69/22 ,  H04W48/12 ,  H04W48/17 ,  H04W72/042 ,  H04W72/0453 ,  H04W84/12 ,  H04W88/08

Abstract: The method includes generating, by an access point (AP), signaling that includes an AP identifier (ID) field, a bandwidth (BW) field, a guard interval (GI) field, a cyclic redundancy check (CRC) field, and a tail field, the AP ID field is used to indicate an ID of the AP, the BW field is used to indicate bandwidth required for data transmission subsequent to the signaling, the GI is used to indicate a length of a cyclic prefix (CP) required for data transmission subsequent to the signaling, the CRC field is used to guard a field before the CRC field in the signaling, and the Tail field is used to empty an encoder and a decoder, where the CRC field and the Tail field are the last two fields of the signaling. The method also includes sending, by the AP, the signaling.